Look how big!: An Addendum

The authors would like to publish a slight correction to the previous proof. Namely, while step 1 of the proof addressed the subject's newfound hand-based dexterity, it is well-known that proofs of this nature require a discussion of all four limbs. We therefore submit as further evidence the following video of the subject's developing interest in the workings and motion of her legs, taken, in fact, during the posting of the original proof. Enjoy.





p.s. The video is a lot more fun if you self-narrate, e.g., "Hm, I wonder what this does." or "Well, will ya look at that!" Also, keep an eye out for a cameo by the tongue around the 18-second mark.